Quantity-stop for dispensing-pumps.



c. E. FAIRBANKS.

QUANTITY STOP FOR DISPENSING PUMPS. APPLICATION FILED/OCT. 25. I915.

' T 7 INVENTOR.

T WTNESSES mmmm= 11W I BY W I ATTORNLfYS.

' BANKS,

. CHARLES El EAmsAn s, E wEsT SPRINGFIELD, MASSACHUSETTS, assioivon To GILBERT & BARKER MAnUEAoTUnINecoMP NY, or WEST srraineEiELD, MASSA- CHUSET'IS, {a conronATron-or MASSAGHUSETTS. I

To all'whom may concern:

Be it known that 1, CHARLES E. FAm- America, and residing in West Springfield,

in the county of Hampden and State of Massachusetts, have invented certain new and useful- Improvements in Quantity- Stops for Dispensing-Pumps, of which the following is a specification.

This invention relates to improvements in quantity stops for measuring pumps, such as are commonly used in dispensing gasolene and like oils.

improved for convenient and accurate ad ustment on '25 More particularly, it relates to impro-yed construction in the quantity stop itself, as

distinguished from the systemand arrange- -ment of stops for coiiperative action with the pump, and the individual stops are adapted to be used and arranged in a manner similar to that shown in the patent to J. B. Davis, No. 874,574, granted December 24, 1907 An object of the invention is to provide an quantity stop which is arranged its supporting rod.

. Another object of the invention is to provide in a quantity stop construction simple and improved means for. sealing the stop in Another object is to provide an improved quantity stop construction which is characterized by extremely simple and generally improved mechanical structure.

pear in the detailed description and anneXed claims.

Referring to the drawings as illustrating one preferred manner in which the invention may be put to use Figure 1 is a general elevational vi'ew of a dispensing pump illustrative of the arrangement of the quantity stops therein; Fig. 2 is an elevational view on an enlarged scale of the qu antity stops andthe supporting means therefor; Fig. 3 is a sectional plan view taken on the line and looking in the direction of the arrows; Fig. 4 is a front elevational view of a portion of Fig. 3; Fig. 5 is a plan view of a 'single quantityistop; and Fig. 6

is a sectional elevation taken on the line 66- of Fig. 5 and looking in the direction of the arrows.

Referring to these drawingsin detail," A represents the lower casing ofaovell known Specification of Letters :Eatent.

a citizen of the United States of Further objects and advantages will apoUenTITv-s'ror Eoa'msrEnsrne-ruarrs.

Patented July 18, 1916.

Application filed October 25. 1915. Serial No. 57,?13.

form of dispensing pump, and B represents doors which inclose the upper part of the pump. This type of pump, as is generally wellunderstood, operates by means of a rack a which is connected to the pump piston and may be reciprocated by a handle Z) through suitable gearing. The outlet of the pump is indicated generally at c. Mounted in parallel relation to and adjacent the rack a is a rotatable rod 1 which is threaded throughout the greater portion of its length as clearly shown in Fig. 2. Secured on this rod in a manner to be described are quantity stops 2, any one of which may be swung into the path of a projection 3 on the rack a, whereby the extent of movement of the latter may be limited. These stops 2 are angularly spaced one from another, as clearly shown in Fig. 3, and are movable by a lever 4: fixed to rod 1. The lever moves closely adjacent a sector platefi which has suitable notches 6 to engage a depending projection 7 on the lever, as clearly shown in Figs. 3 and 4. The plate 5 is preferably graduated to indicate visually to the operator which stop 2 lies in the path of projection 3, and

these graduations may, for example, be arranged to indicate a pint, quart, and half gallon, etc, These stops cooperate with the projection 3 in a manner well known in the art to measure quantities delivered from the ump.

The general operation of the pump'is Well known and the general arrangement of the quantity stops just described is disclosed in the above-mentioned patent. This invention is'concerned particularly with an improved construction of the quantity stop itself for use in a pump of the type described.

The construction of the stops 2 is best shown in Figs. 5 and 6, and one thereof will be described with particular reference to these figures. The stop 2 comprises a hub portion 10 and a latemllv outstanding ledge 11- which is formed withhorizontall spaced and vertically inclined wings 12. The hub portion 10 has a smooth vertical bore there in to loosely slip over the threaded rod 1.

-Above and below the hub portionb are check nuts 13 which engage the threads on red 1 and permityertical adjustment of the stop 2 thereon. The outstanding portion 11 i has a lower surface '14, which is arranged to engage the pro ection 3 on the rack a, and

Zlll

Q mamas on its upper portion is a-rcccss formed by and between the spaced inclined Wings 12. A horizontally disposed set screw 15 passes through the hub portion to hold the latter firmly to the rod irrespective of the nuts 13, and this set scrcu lcads to and is applied from, the rcccas-in'the upper part oi the ledge ll ust dcscriluied. After the set screw has been applied an angularly shaped block 16 is laid into the rcccss to conceal. the soi screw. 'lhc hlochs i l and wings 12 have registering hides. as indicated in Figs. 5 and ll'to permit a Wire 17 to he passed thcrellirough, and the ends of this wire may he so; led as indicated at 18, whereby access to the sl sci-cw is prcvcnled. Each of the check nuts it: also have several holes therein as shown in 3 and 6, whereby the two may he connected by a Wire 19, and the latter scaled as shown at 20 on the upper stop in Fig. 2. Preferably, however, a single Wire ill is passed through the holes in the wings .lil, hloch i l, and hath nuts 13, as shown in connection. with the lowermost stop in. Fig. fl, and a singlc seal .lil is thus 4 sullicient for each stop.

The quantity stop 2 has mucous features which result from the constructionqiust dcacrihcd. it is, first of all, very simple in structure and consequently desirable in practice on the score of low cost of u'uunilacture. The stop itself, involving the portions 10, ll, and 12, a one piece structure, which may conveniently he formed at a single operati on. It may be cast it dcsired but is ucl'cralily made by drop forging and, when made in either manner, requires little iinishlngM-"lt is neccssary only to bore the central hole in the portion 10, the small holes in the Wings 12', and to drill and tap the hole for the sol screw l5. Lilosai'isc, the liloch ill nccds no accurate finishing and requires simply the drilling" of a small hole for the scaling: "wire Ill. The check nuts ill and set screw 15' are standard parts which may he hought at a low price. llowcvcr, allhouglh the slruciure is simple and cheap to prmlucc, it proridcs for accuralc and cuuwuicnt adjustment as poll as for menus to seal the parts in adjusted )osilion. "lc'l orc tho screw 15 is set in place, the stop is held hctwccu a pair ofchcclr nuts and. in manipulating tho latter, the stop may he moved up and down by as small lllGl'LlllLlltS as dcsircd to ohlain. an accurate \crlicul posiliouiuu" of lhe slop 2. llaring adjusted thc latter rorlirallr on the rod 1. the stop iii-.1 lic swung on the rod. without allcring ils \crliral losition to obtain the necessary annular adjusimcnt. ilhercaftcr, llu: screw is jammed into the rod. 1 to prcscrl'e hath llic rrrti al and angular udjustuurnts and holh may he simply and conveniently scaicd as already dcscrihlul. it is to he noted that n'hcreas contiiniccl ensereral advangagcment of the stop with the projection 3 on the rack might well dislodge the stop onv the rod if lZ-llQSCl'GW 15 were alone relied upon to hold the stop to the rod, such engagement when indefinitely continued does not affect the accurately adjusted position of" the stop 2 on the rod 1 with the construction described because the stop is backed up by a check out 13. This feature is advantageous in practice because it maintains the accurate adjustment of the stop in spite of careless and headless operation of the pump and particularly he :ausc a dislocation of the stop, as described would cause the pump to UVGIHIGHSHIG. Thus, an improved quantity stop has been provided which is simple, inexpensive to nnmufacture, and may be accurately adjusted and sealed.

It is recognized that various modifications may he made in the structure herein doscrilocd for illust 'ative purposes without departing from the scope of the invention which is defined by the appended claims rather than hy the foregoing description.

ll 'hat I claim is 1. In a IllQl'lSlll'lllg pump, a supporting frame a. recipro ahlc har for operating the pump having! a projection thcreoiu a threaded rod rotatahlv mountcd in said frame in parallel relation to said bar, a plurality of stop devices loosely engaging said rod, nuts threaded on said rod above and below each stop, whcrclp the stops may he vertically morcd lo" adjustment, :1 set screw'iu each stop engaging said. rod whereby the stops may he held in various positions of angular adjustment and the vertical adjustment preserved, iripspcctirc of said nuts, means to scal said set screws, said stops arranged in angular radalion one from another on the rod, and moan to roialc said rod to swing an one oisaid slaps into the path of said projection.

la a measuring pump, a rcciprocalilc pump operating har having: an ahulmcnt tlu-rcoru a rotal'alllc thrcadcd rod in pa 'allcl rclaliou l sa l har. a plurality of vertically ]):l('t.(l slop ll 'l(':v' arraugrcd in angular rclatiop ouc to anollu-r on said rod, and means to turn the lattcr through definite angular increments to hringr each stop device suc- ":uliusllucut. securing means to hold the hub portion lo ihc rod after the former has been uiunilarl ad usted said lllllIlS being up plied above the ledge and between the wings, a device constructed to fit between the latter and revent access to the securing means, and sea able' means to hold said device in position, all constructed and arranged so that each stop may be accurately adjusted vertically and angularly on the rod and 1 thereafter sealed in its adjusted position.

I 3 In a measuring pump, a reciprocable operating bar for the pump having an abutmenttliereon,. a rotatable threaded rod parallel bar; -a plurality of vertically spacedstofidevices arranged in angular relation "one to another on said rod and means .to'turnthe latter through definite angles to swing any one of the stops into the path of the abutment, each of said stops comprising a hub portion slidable on said rod, check nuts above and below the hub ,portion,

whereby the latter may be moved and accu-' rately adjusted; Vertically on the rod, a laterally outstanding ledge integral with the hub portion and adapted to engage said abutment, said ledge having upright spacedvCHARLES E. FAIRBANKS.

prevent access thereto, and scalable 

